| Countries With No Rivers | 0 | - | 4.96 | 77,301 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,287 |
| Countries with Fjords | 0 | - | 4.94 | 101,667 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,686 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,101 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,240 |
| North Sea Countries | 0 | - | 4.92 | 87,833 |
| Black Sea Countries | 0 | - | 4.87 | 60,825 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,689 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,788 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,449 |
| Megadiverse Countries | 0 | - | 4.96 | 149,878 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,167 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,123 |
| African Great Lakes | 0 | - | 4.82 | 67,212 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,424 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,826 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,946 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,858 |
| Capitals by River | 0 | - | 4.55 | 48,413 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,019,345 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,711 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,709 |
| Countries Bordering Brazil | 0 | - | 4.96 | 132,400 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 61,023 |
| 10 Longest Rivers in the United States | 0 | - | 4.86 | 39,486 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,816 |
| Rivers of the United States | 0 | - | 4.93 | 66,846 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,923 |
| Landlocked Countries | 0 | - | 4.99 | 427,857 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,314 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,548 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,816,763 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,797 |
| Landforms by Country | 0 | - | 4.52 | 52,033 |
| Countries That Border Russia | 0 | - | 4.98 | 465,145 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 113,461 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 83,734 |
| Countries Bordering France | 0 | - | 4.83 | 405,559 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,411 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,186 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,222 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,738 |
| Island Countries | 0 | - | 4.99 | 713,291 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,200 |
| Himalayan Countries | 0 | - | 4.93 | 141,081 |
| Andean Countries | 0 | - | 4.94 | 85,937 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,036 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,680 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,585 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,781 |
| Danube Countries | 0 | - | 4.97 | 72,626 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,896 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,036 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,578 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,049 |
| European Landlocked Countries | 0 | - | 4.99 | 147,840 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,635 |
| Countries with the Most Species | 0 | - | 4.99 | 103,682 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,742 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,839 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,983 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,970 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,722 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,204 |
| Countries in the Alps | 0 | - | 4.87 | 119,075 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,164 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,283 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,101 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,236 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,208 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,437 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,656 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,049 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,549 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,363 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,987 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,858 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,722 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,978 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,077 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,304 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,775 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,869 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,935 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,634 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,737 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,653 |
| Largest Countries By Category | 0 | - | 4.97 | 159,214 |
| Countries by Countries | 0 | - | 4.97 | 63,870 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,866 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,778 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,962 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,308 |
| One Border Countries - Shape Quiz | 0 | - | 4.84 | 65,332 |
| Merged Country Shapes Quiz #1 | 0 | - | 4.93 | 59,777 |
| Merged Country Shapes Quiz #2 | 0 | - | 4.92 | 60,587 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,923 |
| Northernmost Countries | 0 | - | 4.99 | 364,916 |
| Countries of South America | 0 | - | 5.00 | 935,133 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,685 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,895,214 |
| "Land" Countries | 0 | - | 4.98 | 339,214 |
| Countries Bordering India | 0 | - | 4.98 | 163,934 |
| Countries that Border China | 0 | - | 4.96 | 264,647 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,420 |
| Countries that Border Poland | 0 | - | 4.99 | 173,421 |
| Merged Countries #2 | 0 | - | 4.96 | 100,030 |
| Merged Countries #4 | 0 | - | 4.81 | 94,239 |
| Merged Countries #6 | 0 | - | 4.90 | 73,948 |
| Merged Countries #7 | 0 | - | 4.93 | 83,299 |
| Rivers A-Z | 0 | - | 4.35 | 32,878 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,522 |
| Sea in the Answers | 0 | - | 4.08 | 49,223 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,457,078 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,274 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,707 |
| Countries with Megacities | 0 | - | 4.99 | 268,274 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,340 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,436 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,685 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,557 |
| Countries by Official Language | 0 | - | 4.95 | 196,360 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,123 |
| Countries in their Native Language | 0 | - | 4.99 | 200,070 |
| Independence from Whom | 0 | - | 4.99 | 213,585 |
| Subdivisions by Country | 0 | - | 4.87 | 50,687 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,787 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,237 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,602 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,871 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,277 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,574 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,970 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,394 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,665 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,223 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,304 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,932 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,532 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,542 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,256 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,683 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,019 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,878 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,667 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,311 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,789 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,102 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,633 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,750 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,915 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,794 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,033 |
| Widest Countries East to West | 0 | - | 4.92 | 130,921 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,640 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,488 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,592 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,213 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,512 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,671 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,555 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,935 |
| Countries with Double Letters | 0 | - | 4.96 | 97,819 |
| Countries that End in N | 0 | - | 4.95 | 172,816 |
| Countries with Five Letters | 0 | - | 4.96 | 284,889 |
| Countries with Six Letters | 0 | - | 4.94 | 215,156 |
| Countries with W | 0 | - | 4.96 | 161,452 |
| Countries with Z | 0 | - | 4.98 | 293,217 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,823 |
| Countries That End in U | 0 | - | 4.95 | 121,471 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,577 |
| Countries that End in O | 0 | - | 4.92 | 160,437 |
| Countries that End in R | 0 | - | 4.87 | 119,323 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,093 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,297 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,838 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,313 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 144,001 |
| Countries That End in Y | 0 | - | 4.91 | 186,217 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,546 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,503 |
| Countries that End in I | 0 | - | 4.94 | 135,466 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,488 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,194 |
| Countries That End in NIA | 0 | - | 4.92 | 110,210 |
| Countries That End in BIA | 0 | - | 4.93 | 149,802 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 168,018 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,965 |
| Countries That End in RIA | 0 | - | 4.93 | 127,207 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,606 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,111 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,490 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 126,953 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,505 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,968 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,532 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,627 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,788 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,702 |
